<div class="index">
    <nav><img src="images/index2.jpg" /></nav>
    <article class="link">
        <section>
            <router-link to="/us-ebike" class="center fl">个人中心</router-link>
            <router-link to="/guide" class="use fl">使用指南</router-link>
        </section>
        <div class="scan" @click="scanQrcode()">扫码开锁</div>
    </article>
    <img class="footer_img" src="images/index1.jpg" />
</div>